<template>
<div class="app-container">
<h2 style="text-align: center;">发布新课程</h2>
<el-steps :active="2" process-status="wait" align-center style="margin-bottom: 40px;">
<el-step title="填写课程基本信息"/>
<el-step title="创建课程大纲"/>
<el-step title="最终发布"/>
</el-steps>

<el-button type="text" @click="openVisible()">添加章节</el-button>
<!-- 弹框 -->
<el-dialog title="添加章节"  :visible.sync="dialogFormVisible" >
     <el-form :model="chapter">
    <el-form-item label="章节标题" >
      <el-input v-model="chapter.title" ></el-input>
    </el-form-item>
    <el-form-item label="章节排序" >
    
      <el-input v-model="chapter.sort" ></el-input>
    </el-form-item>
  
  </el-form>
  <div slot="footer" class="dialog-footer">
    <el-button @click="dialogFormVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveOrupdate">确 定</el-button>
  </div>
</el-dialog>

 <!-- 小节弹框 -->

<el-dialog :visible.sync="dialogVideoFormVisible" title="添加课时">
<el-form :model="video" label-width="120px">
<el-form-item label="课时标题">
<el-input v-model="video.title"/>
</el-form-item>
<el-form-item label="课时排序">
<el-input-number v-model="video.sort" :min="0" controls-position="right"/>
</el-form-item>
<el-form-item label="是否免费">
<el-radio-group v-model="video.free">
<el-radio :label="true">免费</el-radio>
<el-radio :label="false">默认</el-radio>
</el-radio-group>
</el-form-item>

<!-- TODO -->
<el-form-item label="上传视频">
<el-upload
:on-success="handleVodUploadSuccess"
:on-remove="handleVodRemove"



:before-remove="beforeVodRemove" 
:on-exceed="handleUploadExceed"
:file-list="fileList"
:action="BASE_API+'/eduvod/video/uploadAliyunVideo'"
:limit="2"
class="upload-demo">
<el-button size="small" type="primary">上传视频</el-button>
<el-tooltip placement="right-end">
<div slot="content">最大支持1G，<br>
 支持3GP、ASF、AVI、DAT、DV、FLV、F4V、<br>
 GIF、M2T、M4V、MJ2、MJPEG、MKV、MOV、MP4、<br>
 MPE、MPG、MPEG、MTS、OGG、QT、RM、RMVB、<br>
 SWF、TS、VOB、WMV、WEBM 等视频格式上传</div>
<i class="el-icon-question"/>
</el-tooltip>
</el-upload>
</el-form-item>



</el-form>
<div slot="footer" class="dialog-footer">
<el-button @click="dialogVideoFormVisible = false">取 消</el-button>
<el-button  type="primary" @click="saveOrupdateVideo()">确 定</el-button>
</div>
</el-dialog>



<!-- 章节 -->
<ul class="chanpterList">
 <li
 v-for="chapter in chapterVideoList"
 :key="chapter.id">
 <p>
 {{ chapter.title }}
 <span class="acts">
<el-button style="" type="text" @click="openAddVideo(chapter.id)">添加小节</el-button>
 <el-button style="" type="text" @click="openEdit(chapter.id)">编辑</el-button>
 <el-button type="text" @click="deleteC(chapter.id)">删除</el-button>
 </span>
 
 </p>
 <!-- 视频 -->
 <ul>
 <li
 v-for="video in chapter.children"
 :key="video.id">
 <p>{{ video.title }}
      <span class="acts">
     <el-button style="" type="text" @click="openEditVideo(video.id)"  >编辑</el-button>
 <el-button type="text" @click="deleteV(video.id)">删除</el-button>
      </span>
 </p>
 </li>
 </ul>
 </li>
</ul>

<div>
 <el-button @click="previous">上一步</el-button>
 <el-button :disabled="saveBtnDisabled" type="primary" @click="next">下一步</el-button>
</div>

</div>
</template>
<script>
import chapter from '@/api/teacher/chapter'
import video from '@/api/teacher/video'

  export default{
    data(){
        return{
                saveBtnDisabled: false,
                chapterVideoList: [],
                courseId: '',
                dialogFormVisible: false,
                dialogVideoFormVisible:false,
                fileList:[],
                BASE_API: process.env.BASE_API,
                chapter:{
                    
                },
                video:{

                }
        }
    },
    created(){
       if (this.$route.params && this.$route.params.id) { //将路由中的id值获取出来
   this.courseId = this.$route.params.id

   this.getAllChapter()
    }
      
},
methods: {
  //删除调用的方法
  handleVodRemove(){
      video.removeAliyunVideo(this.video.videoSourceId).then(response=>{
          this.$message({
            type: 'success',
            message: '删除视频成功!'
          });
          this.fileList=[]

          this.video.videoSourceId= ''
           //把视频名称赋值
           this.video.videoOriginalName=''
      })

    },


  //点击x调用beforeVodRemove
  beforeVodRemove(file,fileList){
       return this.$confirm(`确定移除 ${ file.name }？`);
  },
        handleVodUploadSuccess(response,file,fileList){  //上传成功的方法
           this.video.videoSourceId= response.data.videoId
           //把视频名称赋值
           this.video.videoOriginalName=file.name
        },
  handleUploadExceed(){
      this.$message.warning("想要重新上传，先删除之前的视屏");
  },
  //=========上面小节中上传视屏功能====
        openAddVideo(chapterId){

              this.  dialogVideoFormVisible=true,
              this.video.title=''
              this.video.sort=''
              
              
              this.video.chapterId=chapterId
              

        },
        //打开小节编辑
        openEditVideo(videoId){
            video.getVideoByid(videoId).then(response=>{
                this.dialogVideoFormVisible=true
                this.video=response.data.eduVideo
            })
        },
        //更改小节
    updateVide(){
        video.updateVideo(this.video).then(response=>{
              this.dialogVideoFormVisible=false,
                      
                     this.$message({
            type: 'success',
            message: '修改成功!'
          });
            this.getAllChapter()
           
            
        })
    },
addVideo(){
    this.video.courseId=this.courseId
    video.addVideo(this.video).then(response=>{
            this.dialogVideoFormVisible=false,
            this.getAllChapter()
             this.$message({
            type: 'success',
            message: '小节添加成功!'
          });
    })
},
    saveOrupdateVideo(){
        if(!this.video.id){
this.addVideo()
        }else{
            this.updateVide()

        }
        
    },
    deleteV(videoId){
         this.$confirm('此操作将永久删除, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(()=>{

        video.deleteVideo(videoId).then(response=>{
             this.getAllChapter()
                      this.$message({
            type: 'success',
            message: '删除成功!'
          })
        })
        })
    },
    //===============================下面章节的方法==============
    //删除chapter
    deleteC(id){
        this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(()=>{
                  chapter.deleteChapter(id).then(response=>{
                      this.getAllChapter()
                      this.$message({
            type: 'success',
            message: '删除成功!'
          })

        })
        })
      
    },
    openEdit(chapterId){

        chapter.getChapterByid(chapterId).then(response=>{
            this.chapter=response.data.eduChapter
            this.dialogFormVisible=true
        })
         
    },
    //弹窗方法
    openVisible(){
            this.dialogFormVisible=true,
            //清空表单数据
            this.chapter.title='',
            this.chapter.sort=''
    },
    //添加
    add(){
         this.chapter.courseId=this.courseId
            chapter.addChapter(this.chapter).then(response=>{
               this.dialogFormVisible=false,
              
                     this.$message({
            type: 'success',
            message: '添加成功!'
          });
             //返回显示章节界面
                this.getAllChapter()
            })
    },
    //修改
    update(){
            chapter.updateChapter(this.chapter).then(response=>{
                     this.dialogFormVisible=false,
                      
                     this.$message({
            type: 'success',
            message: '修改成功!'
          });
            this.getAllChapter()
           
            })
    },

       saveOrupdate(){
           if(!this.chapter.id){//添加
               this.add()
           }else{
               //修改
              this.update()
           }
           
       } ,


    getAllChapter(){
        chapter.getAllChapterVideo(this.courseId).then(response=>{
            this.chapterVideoList=  response.data.allChapterVo
             
        })
    },
     previous(){
          
            this.$router.push({path:'/course/info/'+this.courseId})
            
     }
        ,
    next(){
          this.$router.push({path:'/course/publish/'+this.courseId})
        }
       
}
}

</script>
<style scoped>
.chanpterList{
 position: relative;
 list-style: none;
 margin: 0;
 padding: 0;
}
.chanpterList li{
 position: relative;
}
.chanpterList p{
 float: left;
 font-size: 20px;
 margin: 10px 0;
 padding: 10px;
 height: 70px;
 line-height: 50px;
 width: 100%;
 border: 1px solid #DDD;
}
.chanpterList .acts {
 float: right;
 font-size: 14px;
}
.videoList{
 padding-left: 50px;
}
.videoList p{
 float: left;
 font-size: 14px;
 margin: 10px 0;
 padding: 10px;
 height: 50px;
 line-height: 30px;
 width: 100%;
 border: 1px dotted #DDD;
}
</style>